When did momondo last update prices for flights from Helena Airport to Illinois?

Prices for flights from Helena Airport to Illinois refresh daily.

How old do you have to be to fly from Helena Airport to Illinois?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$226 Cheap Flights from Helena to Illinois in 2026

Find the cheapest flights from Helena to Illinois

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:40 am - 11:59 am

HLN

ORD

5h 19m

1 stop

7:48 am - 12:15 pm

ORD

HLN

5h 27m

1 stop

$329Delta

Fri, Aug 14 - Mon, Aug 24

12:50 pm - 9:53 pm

HLN

ORD

8h 03m

1 stop

11:30 am - 10:41 pm

ORD

HLN

12h 11m

2 stops

$334Delta

Fri, Nov 13 - Sun, Nov 15

5:45 am - 4:49 pm

HLN

ORD

10h 04m

2 stops

11:30 am - 10:41 pm

ORD

HLN

12h 11m

2 stops

$339Delta

Fri, Nov 13 - Sun, Nov 15

4:41 pm - 5:40 am

HLN

ORD

11h 59m

1 stop

7:00 am - 4:04 pm

ORD

HLN

10h 04m

1 stop

$364Alaska Airlines

Fri, Nov 13 - Sun, Nov 15

12:55 pm - 9:30 pm

HLN

ORD

7h 35m

1 stop

1:59 pm - 10:30 pm

ORD

HLN

9h 31m

2 stops

$369Delta

Fri, Aug 14 - Mon, Aug 24

5:45 am - 4:50 pm

HLN

MDW

10h 05m

2 stops

1:00 pm - 10:41 pm

MDW

HLN

10h 41m

2 stops

$374Delta

Fri, Nov 13 - Sun, Nov 15

6:15 am - 12:40 pm

HLN

STL

5h 25m

1 stop

4:40 pm - 9:30 pm

STL

HLN

5h 50m

1 stop

$419United Airlines

Tue, Sep 1 - Sat, Sep 5

2:35 pm - 8:46 pm

HLN

STL

5h 11m

1 stop

12:59 pm - 9:30 pm

STL

HLN

9h 31m

2 stops

$424United Airlines

Tue, Sep 1 - Sat, Sep 5

2:20 pm - 10:49 pm

HLN

ORD

7h 29m

1 stop

6:00 am - 1:33 pm

ORD

HLN

8h 33m

1 stop

$431United Airlines

Tue, Jul 21 - Sat, Jul 25

2:30 pm - 8:36 pm

HLN

STL

5h 06m

1 stop

4:49 pm - 9:18 pm

STL

HLN

5h 29m

1 stop

$479United Airlines

Tue, Sep 29 - Sat, Oct 3

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Delta flights from Helena to Illinois

Our best Delta deals on Helena to Illinois flight tickets

Delta

Aug 14

HLN5:40 amHelena

5h 19m

1 stop

ORD11:59 amChicago O'Hare Intl

Aug 24

ORD7:48 amChicago O'Hare Intl

5h 27m

1 stop

HLN12:15 pmHelena

$329

Delta

Nov 13

HLN12:50 pmHelena

8h 03m

1 stop

ORD9:53 pmChicago O'Hare Intl

Nov 15

ORD11:30 amChicago O'Hare Intl

12h 11m

2 stops

HLN10:41 pmHelena

$334

Delta

Nov 13

HLN5:45 amHelena

10h 04m

2 stops

ORD4:49 pmChicago O'Hare Intl

Nov 15

ORD11:30 amChicago O'Hare Intl

12h 11m

2 stops

HLN10:41 pmHelena

$339

Alaska Airlines flights from Helena to Illinois

Our best Alaska Airlines deals on Helena to Illinois flight tickets

Alaska Airlines

Nov 13

HLN4:41 pmHelena

11h 59m

1 stop

ORD5:40 amChicago O'Hare Intl

Nov 15

ORD7:00 amChicago O'Hare Intl

10h 04m

1 stop

HLN4:04 pmHelena

$364

Alaska Airlines

Sep 17

HLN5:18 pmHelena

25h 57m

2 stops

ORD8:15 pmChicago O'Hare Intl

Sep 20

ORD8:00 amChicago O'Hare Intl

9h 41m

1 stop

HLN4:41 pmHelena

$460

Alaska Airlines

Oct 3

HLN4:48 pmHelena

12h 32m

1 stop

ORD6:20 amChicago O'Hare Intl

Oct 7

ORD9:00 amChicago O'Hare Intl

8h 11m

1 stop

HLN4:11 pmHelena

$496

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaChicago

HLN - ORD

HLNORD

Helena

Fri 8/14

5:40 am-11:59 am

1 stop5h 19m

Chicago O'Hare Intl

Mon 8/24

7:48 am-12:15 pm

1 stop5h 27m

$329

HelenaChicago

HLN - ORD

HLNORD

Helena

Fri 11/13

12:50 pm-9:53 pm

1 stop8h 03m

Chicago O'Hare Intl

Sun 11/15

11:30 am-10:41 pm

2 stops12h 11m

$334

HelenaChicago

HLN - ORD

HLNORD

Helena

Fri 11/13

5:45 am-4:49 pm

2 stops10h 04m

Chicago O'Hare Intl

Sun 11/15

11:30 am-10:41 pm

2 stops12h 11m

$339

HelenaChicago

HLN - ORD

HLNORD

Helena

Fri 11/13

4:41 pm-5:40 am

1 stop11h 59m

Chicago O'Hare Intl

Sun 11/15

7:00 am-4:04 pm

1 stop10h 04m

$364

HelenaChicago

HLN - ORD

HLNORD

Helena

Fri 8/14

12:55 pm-9:30 pm

1 stop7h 35m

Chicago O'Hare Intl

Mon 8/24

1:59 pm-10:30 pm

2 stops9h 31m

$369

HelenaChicago

HLN - MDW

HLNMDW

Helena

Fri 11/13

5:45 am-4:50 pm

2 stops10h 05m

Chicago Midway

Sun 11/15

1:00 pm-10:41 pm

2 stops10h 41m

$374

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

Tue 9/1

6:15 am-12:40 pm

1 stop5h 25m

Lambert-St Louis

Sat 9/5

4:40 pm-9:30 pm

1 stop5h 50m

$419

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

Tue 9/1

2:35 pm-8:46 pm

1 stop5h 11m

Lambert-St Louis

Sat 9/5

12:59 pm-9:30 pm

2 stops9h 31m

$424

HelenaChicago

HLN - ORD

HLNORD

Helena

Tue 7/21

2:20 pm-10:49 pm

1 stop7h 29m

Chicago O'Hare Intl

Sat 7/25

6:00 am-1:33 pm

1 stop8h 33m

$431

Quickest round-trip

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

Tue 9/29

2:30 pm-8:36 pm

1 stop5h 06m

Lambert-St Louis

Sat 10/3

4:49 pm-9:18 pm

1 stop5h 29m

$479

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Helena to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Helena to Illinois?

Alaska Airlines and Delta are the most popular carriers operating from Helena to Illinois

What airlines fly to Illinois?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Illinois from Helena according to our data. United Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

Cheap Helena to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to Illinois

Fastest flight time	5h 06m
Direct flights	None

The fastest flight from Helena to Illinois takes 5h 06m

There are no direct flights from Helena to Illinois. There are no popular flight routes from Helena to Illinois.

Search flight deals

Frequently asked questions about flying from Helena to Illinois

When did momondo last update prices for flights from Helena Airport to Illinois?
Prices for flights from Helena Airport to Illinois refresh daily.
How old do you have to be to fly from Helena Airport to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Helena to Illinois?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Helena to Illinois for you.

Can I find flights from Helena to Illinois with flexible booking policies on momondo?

Yes. All flights to Illinois from Helena on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Helena to Illinois?

momondo helps you find the best flight between Helena and Illinois by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Helena to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from Helena. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.